46 lines · cpp
1//===-- Unittests for stpcpy ----------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/string/stpcpy.h"10#include "test/UnitTest/Test.h"11 12#include "src/string/string_utils.h"13 14TEST(LlvmLibcStpCpyTest, EmptySrc) {15 const char *empty = "";16 size_t src_size = LIBC_NAMESPACE::internal::string_length(empty);17 char dest[4] = {'a', 'b', 'c', '\0'};18 19 char *result = LIBC_NAMESPACE::stpcpy(dest, empty);20 ASSERT_EQ(dest + src_size, result);21 ASSERT_EQ(result[0], '\0');22 ASSERT_STREQ(dest, empty);23}24 25TEST(LlvmLibcStpCpyTest, EmptyDest) {26 const char *abc = "abc";27 size_t src_size = LIBC_NAMESPACE::internal::string_length(abc);28 char dest[4];29 30 char *result = LIBC_NAMESPACE::stpcpy(dest, abc);31 ASSERT_EQ(dest + src_size, result);32 ASSERT_EQ(result[0], '\0');33 ASSERT_STREQ(dest, abc);34}35 36TEST(LlvmLibcStpCpyTest, OffsetDest) {37 const char *abc = "abc";38 size_t src_size = LIBC_NAMESPACE::internal::string_length(abc);39 char dest[7] = {'x', 'y', 'z'};40 41 char *result = LIBC_NAMESPACE::stpcpy(dest + 3, abc);42 ASSERT_EQ(dest + 3 + src_size, result);43 ASSERT_EQ(result[0], '\0');44 ASSERT_STREQ(dest, "xyzabc");45}46